Metal-punching machine



Patented May 9, 1922.

l 2 SHEETS-SHEET 2.)

G. P. KLINE METAL PuNcHlNG MA APPLICATION FILED OCT. 2

I v 3d f l l /VIVA fg citizen oi the United States,

GEORGE P.

ar is .il a,

COIVIPANY, OE FIOLNT, ILLENOIS.

METAL-PUNCHING WEACHINE.

iaiaaie.

llpplicatoniiled ctober 2'7, 1935. Serial No. 333,744.

To all fw from. t may concern Be it known that l, lnonen P. limits, varesiding at Moline, in the county oic Rock island and State of illinois,have invented certain new and usetul improvements in Metal-PunchingMachines, of which the following is a specification.

My invention. has reference to metal punching machines, and morespecially to that class of such devices Which are known as multiplepunches, wherein a plurality of the punching tools are supported andarranged in the inacl'iine so as to be operated in unison. is it isfrequently necessary to change the position oit the tools longitudinallyot the supporting head or ram, it is essential that they shouldbe heldiii-place in such a manner that they can be readily loosened, for thepurpose ot adjustment, or completely detacl'ied, it desired.. it thesame time the `.node et attachment oit the tool holdeito the operatinghead must he such as to enable such tool-holder to withstand all. thestrains consequent upon the punching operation, and especially Athestripping strain which accompanies the upward movement ot the head.

ln former machines oit this class it has been usual to connect thepunch-holder with the operating tace of the ram hy means of belts, twoIor more of such fastening devices being employed tor that purpose, andin some cases only one in connection with what suoli detent having anengagement in a channel longitudinally of the. ram. The bolts employedvare frequently di'liicult or access, and require considerable labor andtime ior removal and replacement. rllheir use also calls for a speciallyconstructed channel in the movable head, and entra holt sustaining partsen the punch holder.y @ne of the purposes of my invention is to do awayWith the use et 1eolts entirely, and connect the tool-holder with theoperating tace or' the rain in such a vWay that it can be is termed adetent,

quickly and easily released therefrom. rllhe manner oi construction andmeans rer attachment oi the tool-holder also make it possible to greatlysimplify the form thereot'. without detracting from its efficiency.

Another requirement oit a machine of the Specification of LettersPatent.

' particularly bolt has been used,

Patented May 9, 1922.

class mentioned, is that all of the punches .must be held in alignmentlongitudinally oi the head, so as to coincide at all times with theirseveral dies, and my device is adapted for holding them i'irmly, againstmovement transversely of the head. i

` rl`he invention is also constructed and arranged so that it can bequickly secured in place 'from that side of the machine most accessibleto the operator. l/Vhen attached, the punch-holder is entirely below theoperating face ot the movable head, instead ot projecting upwardlyalongone or other of the side :faces of such head, as is they case in someother punching machines.

ln'my device the punch-holder is readily slipped into position at itsinner end, and is held therein by a clincher grip or lock, which holdsthe same rigidly against any movement transversely 'or the movable head,and eliminating the use ot holts or other attachments usually employed,for that purpose. The opposite end of the tool-holder is connectedv-:ith thehead by movable attachments, which are secured to the holderin such a ivay that they cannot become disconnected and displaced, whennot in use.

The above, and other features and advantages ot my invention will morefully` appear 'trom the 'following specification, referencel heingcompanying the same, in which:

l shows my invention in side yelevation, `with a fractional part of themovable head et the machine shovvn in section.

Fig. Q is a plan view of one of the punchholder units.

Fig. 3 is a view, similar to Fig. l, showing a mod'iied construction ofthe device.

Figs. Ll and 5 are details of the cam membei' 25, in side elevation andedge vievv, respectively.

Fig. 6 shoivs a modified holder tongue.

'ihere are illustrated in said drawings only such parts Aoie the machineas are involved in the present application, similar structural' partsbeing indicated therein by corresponding reierence characters. rlhereare portrayed in the drawings and set out in the specificationhereimtlie ypreferred embodiment of the device, with some modified formoi the toolhad to the drawings ace, in which is heid forms which haveoccurred to the applicant, it being' understood that he does notnecessarily confine himself thereto, but that other changes in the formand arrangement of the parts thereof may be obvious to those skilled inthe art to which this device belongs, without departing fromv thegeneral scope and spirit of the invention.

1 represents a portion of what usually comprises the lower end of amovable ram, or

cross-head, with 'which the punch-holdersA are connected, inspaced-apart relations, said head being provided at one of its sideswith a 'downwardly projected extension 2, in one face of which is alongitudinal recess 3, the lower face l of which has a downward andinward inclination. 1n the usual arrangement and operation of suchmachines, the extension 2 would be located on the inner edge of the head1, or farthest from the operator, with the recess 3 disposed toward thefront of the machine.

A tool-holder5 is provided with a socket the upper part of a punch 7, atthe upper end of which is a head 8, preventing movement of the tooldownwardly in the holder. At one of the ends of the toolholder is a.tongue 9, the lower face of which conforms to the face t of the recess3, when the tool-holder is in operative contact with the lower face ofthe head 1, as shown in F ig. 1. At the opposite side of the holder 5 isa pair of downwardly projected ears 10, supporting a pivot 11, uponwhich is f' swingingly mounted an Varm 12, which passes upwardly throughan opening 13 in the bottom plate of the part 5, and is provided at itsupperend with a hook-like ein tension 14, adapted for engagement with alongitudinal rib 15 on the face of the head 1. The Lipper face 16 of therib 15 is preferably disposed downwardly and inwardly similarly totheface l of the recess 3, said face 16 providing a supporting ledge forany desired number of the hook members 12. The extension 14 of said hookmember is fitted with a set-screw 17, the end of which has a bearingagainst the face 1G, and by the operation of which the engaging faces ofthehead 1 and punch-holder 5 can be drawn tightly together.

The vtool-holder is applied to the head 1 by first securing the tongue 9in the recess 3'which is accomplished by inclining the tool-holder andintroducing the tongue into the recess, at the same time rocking thetool- ,holder forwardly into position, in engagement with the head 1.When the faces of the parts 1 and 5 are in contact the lower face ofvthe tongue 9 is also in close engagement with the lower face f1 of therecess, making it impossible to remove said tongue laterally of thehead, except by a reversal of the movement by means of which it wasinserted in the recess. rllhe engagement of said coacting faces of thetongue and recess is in effect a clincher grip, locking the tongue 9from release, and holding the member 5 firmly from movement withrelation tothe head 1, transversely thereof. 1t will be obvious thatmovement of the tool-holder toward theinner face of the head 1 isequally impossible. A series of punches in which the Vtools have beenproperly aligned will be ening the screw 17, suiiciently to permit avmovement of the holder longitudinally of the head 1. To detach the same,the arm 12 is swung away from the head until it yclears the ledge 16,when the tool-holder can be detached, in the manner hereinbefore setforth. 1n the operation of inserting the tongue 9, or removing the same,a little clearance is required for the inner end thereof, and this isprovided by a channel 3a in the lower face of the head 1, just above therecess 3.' The face of the extension 2 which is adjacent to thetool-holder is also beveled, or otherwise cut away, as at 18, to ,permitfree move-ment of the outer end of the toolholder downwardly.

The tool-holder is provided with theusual gag-block 19, if desired,which is held normally between the head of the punch and the operatingface of the head 1,1such block being slidable in the tool-holder, andprovided with a frame extension 20, on the outerend of which is a.handle 21. permitted the necessary amount of movement within the frame20, and such'frame is also allowed the necessary sliding movementwithout interference from said'arm.

In Fig. 3 is shown a modiiiedform of the device, wherein the recess 3 isprovided with a curved lower face'22, the lower face of the tongue 9conforming thereto. As in the former construction, the tongue can berolled into or out of position by rocking the tool- The arm 12 is l lioholder, and the tool-holder will be locked from release when held inclose contact with the head 1.l 1n this construction the toolholder isshown with a pivot 23 fixed in the sides thereof, upon which is mountedan arm 24:, having a bent upper end in which pivoted an eccentric cam25, adapted for engagement with the upper face of the rib 15, to holdthe parts 1 and 5 tightly together,

the side pieces of the trame 2O are provided with slots 27, to permit asliding movement of said trame.

In Fig. 6 the tongue 9 is shown provided with a tace 2S, which isparallel with'the lower face oli' the tongue, and which will permit theseating of said tongue in the recess 3 without cutting away any portionof the lower face ot the head l.

In the punching operation the 'torce of the head l is directeddownwardly through the gag-block 19 and punch 7, the punch-holdermaintaining said parts in their proper relations, and preventing anymovement thereof out of a direct line. In the return movement ot' thehead l, any tendencyy of the stress which results from stripping theworlr from the punches to detach the tool-holder from the head isovercome by the extension 9, firmly supportedon the ledge et at one sideof the line et action ot the machine, and the swinging hook inengagement 'with the ledge 16 on the other side ot said line ot action,

It will be apparent that by reason oit the swinging hook-members havinga pivotal connection with the tool-holder, there is no possibilityv ofsuch parts becoming lost or mislaid. Such parts could be also slidablymounted in the tool-holder, or otherwise mounted therein so as to bepermitted the desired movement with relation to the head 1.

When the handle ot the cam 25 is forced inwardly to a sufficient extent,it operates to lock the cam in engagement with the rib 15 against theaccidental release thereof. The upper face ol' the rib 15 can also bemade horizontal, if desired, or ot other forms.

lVhat I lclaim, and desire to secure, is:

1. In a device ot the class described, a movable member having` arecessed eXtension the lower side ot the recess having a downward andinward inclination; a toolholder provided with a. tongue adapted forengagement with said recessed extension; and means for attachment ofsaid tool-holder to said movable member, at a point other than saidextension.

2. In a device of the class described, a. movable member having arecessed extension on its operating tace the lower side of the recesshaving a downward and inward inclination; a tool-holder with a tongue atone oi' its ends adapted to engage and lock in said recessed extension;and means at the other end of said tool-holder tor the attachmentthereot1 rigidly to the 'face of said movable member.

3. In a device ot the class described, a movable member having anoperating Atace` adapted for the support ot a tool-holder, and providedwith a recessed extension the lower side of the recess having a downwardand inward inclination; a tool-holder provided at one end with a tongueadapted Jfor engagement with said recessed extension, and at the otherend with a hook member, adapted tor connection with said movable member.

l. Inv device oit the class described, a movable member adapted for thesupport or" a tool-holder, and provided at one of its sides with an.extension having a recess the lower side of which has al downward andinward inclination; and at the other side with a laterally projectedrib; a tool-holder provided at one end with a tongue adapted to engagesaid recessed extension and at the other with a hook adapted to engagesaid rib; and means carried by said hook 'for clamping said movablemember and said tool-holder tightly togethen 5. In a device. oi theclass described, a movable member provided at one of its sides with adownwardly projected extension having a recess in its inner tace, and atthe other side with a lateral rib, the lower side of said recess bein@inclined downwardly and inwardly; a tool-holder provided at one of itsends with a. tongue adapted tor engagement with said recessed extension,and at the other end with a hook member adapted for engagement with saidlateral rib; and means carried by said hook member for clamping atool-holder rigidly against the operating :tace ot' the movable member.i

6. In a device ot the class described, a movable member adapted tor thesupport ot a tool-holder, having along one side ot its operating tace anextension provided with a longitudinal channel, the lower side-ot whichisl inclined downwardly and inwardly; and along the other edge with alaterally projected rib; a tool-holder provided with an extensioncapable ot engagement with said channel by a rocking movement, andlocked therein when the tool-holder is in operative contact with theJface of said movable member; and a connecting member movably carried inthe opposite end of the tool-holder trom said extension, and adapted forengagement with said laterally projected rib.

7. In a device of the class described, ay movable member adapted for thesupport of a. tool-holder, provided at one of its sides with a recessedextension the lower side of the recess having a downward and inwardinclination, and at the opposite side with a laterally projected rib,said recess and rib being provided with similarly disposed sup-- portingledges; a tool-holder` provided at one end with a tongue adapted forengagement with said recess, so as to be held therein with a. clinchergrip, and the opposite end with a movable hook member adapted forengagement with the ledge of said lateral rib, the engagement ot saidtongue and movable hook with said movable member op- @rating to holdsaid tool-holder in engagement with the working face of said movablemember; and means for clamping said toolholder and movable member inclosed operative relation with each other.

8. In a device of the class described, a movable member' adapted for thesupport of a tool-holder, provided at one of its sides with a recessedextension, and at its opposite side with a. laterally projected rib,said recess and rib being provided with similarly disposed downwardlyand inwardly inclined faces forming supporting ledges; a toolholderprovided at one end with a tongue adapted for engagement with the ledgeofy said extension, so as to be held therein with a clincher grip, andat its opposite end with a swinging member having a projection adaptedfor engagement with the ledge of said rib; the engagement of said tongueand swinging member operating to hold said tool-holder in approximatecontact with said movable member; and means carried by sai d swingingmember ttor clamping said toolholder and movable member tightlytogether.

9. In a metal punching machine, a movable member designed ior thesupport of a tool-holder, provided with longitudinal supporting ribs onopposite sides of the line'of motion ot the tool, having downwardly andinwardly inclined supporting faces; means for detachably connecting saidtool-holder with one of said ribs; an outwardly curved hook memberVadapted for engagement with the other of said ribs; and a clampingdevice carried by said hook member, and adapted a tool-holder,.providedat one of its sideswith a downwardly projected extension, recessed inits inner face, and at its opposite side with afsupporting ledge, thelower side oi' the recess being downwardly andy in* wardly inclined; atool-holder providedat one oi' its ends with means for engagement withsaid extension; a movable hook mem ber at the opposite ,side of saidtool-holder, adapted for engagement with said ledge; and a cam devicecarried by said vhook mem` ber, also adapted for engagement with saidledge, to clamp said movable member and tool-holder tightly together.

1l. Ina metal punching machine, a mov able member, adapted for thesupport of a tool-holder, provided at one of its lower edges with adownwardly projected exten sion having a detent channel in its innerface, the lower wall of which recess is inclined downwardly andinwardly, and at the opposite edge with a laterally disposed rib; atool-holder having a detent extension for engagement ywith said channel;a hook member movably mounted in the opposite yend of said tool-holderand adapted for engagement with said lateral-rib; and a gag-blockslidable in said tool-holder, said hook-member and gag-block having freeoperative movement with relation to each other.

ln testimony whereoffl atliX my signature.

GEORGE P. KLINE;

